TAPPI T411 Caliper of Paper

Testing Standard:

TAPPI T411 Thickness (Caliper) of Paper, Paperboard, and Combined Board

Standard Number
TAPPI T411

Standard Title
Thickness (Caliper) of Paper, Paperboard, and Combined Board, Test Method

Overview:

TAPPI T411 Test Method is the measurement of a single sheet thickness of paper and corrugated material. With thickness directly related to the flexural properties of a fiberboard shipper, it is important to verify the caliper to identify potential issues in the overall strength of the packaging materials. Purple Diamond Testing offers TAPPI T411 Thickness (Caliper) of Paper, Paperboard, and Combined Board as part of our packaging compliance and validation services.

Rationale:

TAPPI T411 – Thickness (Caliper) of Paper, Paperboard, and Combined Board. Data is obtained using a standard constant pressure for all materials being evaluated to ensure an accurate measurement across all material types. The data obtained can be used to verify manufacturer specifications, compare different materials, and aid in design.

Key Points:

Related Standards:

Accreditations

Achieving ISO 17025 Accreditation is the pinnacle in third-party laboratory testing accreditation. It confirms that the facility has management, quality, and technical systems in place to ensure accurate and reliable analyses.
ISTA is revered as the certification standard for package testing for distribution. ISTA’s Testing Protocol remains a series of testing methodologies and standards well recognized within the packaging community.
A select few companies are authorized by PHMSA as an approved third-party packaging testing laboratory in accordance with Hazardous Materials Regulations, critical to ensuring safe transport of dangerous goods.

Affiliations

With over 12,000 standards globally, ASTM International’s fully transparent standards development enhances performance and confidence in consumer choices.
The Technical Association of Pulp and Paper Industry’s peer-reviewed standards improve production through operational methods and industry recognized best practices.

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